Ceramic Infrared Heaters FAQ

Q. What is an Elstein electric ceramic radiator?

Elstein ceramic infrared radiators are electrical heating elements consisting mainly of a technical ceramic that is high-temperature resistant.

Q. What is the wavelength of an Elstein ceramic infrared emitter?

Elstein electric IR emitters provide only the non-visible infrared radiation and no visible, or rather hardly visible, light. The emitted infrared radiation covers the medium and long-wave infrared range of 2 - 10 μ m.

Q. What is the average life of an Elstein infrared radiant element?

The life of the Elstein ceramic heater is dependent upon the temperatures reached during use. For example, an HLS at 2012 °F in continuous operation has an average service life of 2,000 hours. An SHTS with 1652 °F on the other hand reaches about 8,000 hours. Ceramic Radiators with low power often last more than double this useful life. On the other hand, there are applications in which the radiators can fail after 1000 hours due to materials like chlorine, fluorine, hydrofluoric acid, sodium hydroxide, nitrogen and peroxide, which attack the heating coil or ceramic.

Q. Why should I use Elstein electric infrared heaters?

Elstein electric IR heaters have the following major advantages:

  • Long Life: They have a long service life due to an embedded heating coil. 
  • Very Accurate: They can be controlled with an accuracy of 1°C due to an integrated thermocouple. 
  • Suitable for Food Sector: The surface is clean and does not oxidize. 
  • Suit Various Applications: They are available in many sizes, wattages and operating voltages. 
  • Quick Mounting or Replacement: They have a simple fastening system.

Q. How can heat from an Elstein ceramic electric radiator be controlled?

A thermocouple can be embedded in the radiation surface of Elstein infrared radiant. In connection with Nexthermal's TRD 1 Temperature Control Units and TSE Power Switches, the temperature of the radiators can be controlled with an accuracy of +/- 1°C.

Q. Can an Elstein infrared radiant emitter be used in vacuum?

Yes, all Elstein infrared radiant emitters, with the exception of the HLS series, can be used in vacuum.

Q. Can Elstein infrared radiant heating elements be used to heat metals?

Bright metal shows a relatively weak absorption of infrared radiation. However, corroded, roughened, coated, enameled or painted metal can reach an absorption degree of more than 90%. Therefore electric ceramic infrared heaters are good for paint drying.

Q. What is the optimal distance between infrared radiators and object to be heated?

The optimal distance with ceramic heaters depends upon the type of object to be heated and whether it is stationary or moving. 

  • In the case of heat-sensitive goods (paper, thin foils) the radiation distance should not be less than 50 mm.
  • If the radiators are not mounted densely next to each other, the distance must be larger if the goods to be heated are stationary.
  • If the distance between radiators is 3 to 4 cm, a distance between radiators and goods of 15 - 20-cm is required in order to achieve uniform heating.

Q. Will Elstein infrared heaters be damaged when splashed with water?

No. When hot, Elstein infrared emitters are splash resistant. If the radiators get in touch with water when they are cold, they must subsequently dry at a low temperature (max. 176 °F) for a few minutes.

Q. Does an Elstein electric ceramic radiator heater fulfill clean room requirements?

Yes. For decades Elstein infrared radiant heaters have been used in clean rooms class 100 or better. They are used in semiconductor production, in the pharmaceutical industry and in manufacturing picture tubes. Elstein Infrared Radiators are also used in the production of modern TFT displays.